Rubber-covered metal article and method of making the same.



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LEO DAFT, OF RUTHERFORD, NEW JERSEY, ASSIGNOR T0 ELECTED-CHEMICAL RUBBER 85 MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

RUBBER-COVERED METAL ARTICLE AND METHOD OF MAKING THE SAME.

menace.

Specification of Letters Patent.

Patented Jan. 12, rare.

No Drawing. Original application filed June 3, 1910, Serial No. 564,840. Divided and this application filed December 24, 1912.

ing attached to it by gums or cement as heretofore, thereby producing an article in V which the adhesion is much greater than the adhesion it has been possible to produce heretofore between rubber and metals.

I find that if alloys containing antimony and particularly alloys containing copper and zinc combined with the antimony are used as a base to which the rubber is vulcanized, a perfect adhesion may be produced between the rubber and the metal by heating the rubber to a vulcanizing temperature while in contact with the metal.

l I find that satisfactory adhesion is produced between ordinary grades of rubber and an alloy of the following composition:

Copper 62. 66 per cent. Zinc 33. 7 3 per cent. Antimony 3. 6-1 per cent.

cent. of the whole nor should it be less than one per cent. of the whole. Satisfactory results are obtained from an alloy consisting of sixty per cent. copper, thirty-eight per cent. zinc and two per cent. antimony.

l find that the presence of tin prevents a perfect adhesion of the rubber and the metal when tin is present in quantities sufficient to; give the alloy a stannous, or tinny character. a-

While I have described a form of my invention, I do not intend to limit myself to the form described, since it is obvious that Serial No. 738,459.

the proportions of the various metals may bevaried to produce equivalent results and that equivalents of the various metals might be used.

That I claim and desire to secure by Letters Patent is:

1. A rubber covered metal article, comprising a non-stannous base of an alloy of antimony in which the antimony does not exceed five per cent. of the whole, with a rubber covering vulcanized thereon.

2. A rubber covered metal article, comprising a non-stannous base of an alloy of antimony in which the antimony is not more than five per cent. of the whole or less than one per cent. of the whole, with a rubber covering vulcanized thereon. 1

3. A rubber covered metal article, comprising a non-stannous metal base, consisting of an alloy of antimony and copper in which the antimony is not more than five per cent. of the whole or less than one per cent. of the whole with a rubber covering portions of approximately sixty per cent. copper, thirty-eight per cent. zinc and two per cent. antimony, with a rubber covering vulcanized thereon.

5. A rubber covered metal article comprising a metal base, consisting of a ,nonstannous alloy of copper, zinc and antimony in which the antimony is not more than five per cent. or less than one per cent. of the whole, with a rubber covering vulcanized thereon.

6. A method of attaching rubber to metals, which consists" in bringing rubber containing a vulcanizing agent into engagement with the surface of a non-stannous alloy of antimony and copper, and vulcanizing said rubber upon the surface ofsaid,

alloy.

7. A method of attaching rubber to metals, which consists in bringing rubber containing a vulcanizing agent into engagement with the surface of a non-stannous alloy of antimony, in which the antimony does not exceed five (5) per cent. of the whole, and vulcanizing said rubber upon the surface of said alloy.

8. A method of attaching rubber to metals, which consists in bringing rubber containing a vulcanizing agent into engagement with the surface of a non-stannous alloy. of antimony, in which the. antimony is not more than five (5) per cent. of the whole, or less'than one (1) per cent. of the whole,

, and vulcanizing said rubber upon the sur- 'face of said alloy.

' 9. A method of attaching rubber to metals,-which consistsin bringing rubber containing a vulcanizing agent into engagement with the surface of a ,non-stannous alloy of antimony and copper in which the antimony is not more than five 5) per cent. of the whole, or'less than one (1) per cent. of the whole, and vulcanizing said rubber upon the surface of said alloy.

10. A method of attaching rubber to metals, which consists in bringing rubber conment with the surfaceof a non-stannous althe antimony is not more than'five (5) per taining a vulcanizing agent into engageloy of antimony, copper and zinc, in which cent. of the whole, or less than one (1) per cent. of the whole, and vulcanizing said rubber upon the surface of said alloy.

11. A method of attaching rubber to met als, which consists in] bringing rubber containing a vulcanizing agent into engage- IIIGIltWlth the surface of a non-stannous a1- 1031 of antimony, copper, and zinc, in the proportions of approximately two (2) per LAURA E. SMITH, WALTER S. JoNEs. 

